Pulverized-material segregator



Patented Dec. 30, 1930 UNITED STATES HENRY G. LYKKEN, F MINNEAPOLIS, MINNESOTA PULVEBIZED-MATERIAL .SEGBEGATOIBI Application iledl Dctober 4, 1924. Serial No. 741,532.

August 16, 1924, patented August 14, 1928,- Patent No. 1,680,894; to provide for projecting, preferably centrifugally by a rotor,` the material into a series of chambers, preferably surrounding the rotor and arranged to receive the projected material in successive or progressive grades of lineness, the coarser segregated material being preferably returned to the pulverizing or rindingdevice foriurther reduction wit the other material undergoing laction in the grinding rovide certain' orv pulvierizing device; to chambers, preferably a num er of them, in increasing diameters from the inlet end of the rotor, the remainder of the-chambers being preferablyof substantially equal diameters; to provide e'ach of the chambers with a collecting pocket to which may be connected a discharged duct or conduit with-or without control valves; to preferably provide the ducts with valves, preferably of the butterfly type and preferably connected to a common shaft which may be operated to effect an operation of the valves in unison, but it is to be understood that these valves may be independently operated if desired; to provide for the passage of the material projected in the chambers, to the pockets, preferably substantially tangentially to the chamber, a wall or baiiie being preferably interposed between each chamber and pocket and to one side of the path of movement of the material from the chamber to the pocket; i5 to provide a rotor with a preferably axial passage with an inlet at one end for the entry of the material and means for supplying the material to the inlet, the material being preferably in the form of suspended particles carried by a stream of, air or the like,

and an outlet at the other end of the rotor passage for the exit of air or the like substantially or wholly free of any suspended particles of material, and with means for conducting olf such air or the like and drawing the same from the passage of the rotor; to provide a unit rotor and blower, the impelling members of both being preferably -common or integral, also having a common shaft if desired, the blower acting to withdrawthe air or theV like from the rotor and aiding in the drawing of the material with the air or the like into the passage of the rotor; and to provide for such other objects, capabilities, vand advantages as will later more fully appear and are inherently pos-A sessed by the invention.

In the drawings illustrating an embodiment of the invention Fig. 1, is a longitudinal sectional view through a segregator constructed in accordance with the invention; Fig. 2 is a transverse sectional view taken on a plane represented by a line 2-2 on Fig. 1

of the drawings; and, Fig. 3 is a transverse sectional view taken on a plane represented 76 by the line 3--3 on Fig. 1 of the drawings.

Referring more particularly to the drawings the embodiment chosen to illustrate the invention comprises a shaft 1 sup orted in suitab1ebearings2 and?) and provided with so a driving pulley 4 at one end of the shaftV and with a driven pulley 5 at the other end of the shaft over which may run a belt 6 to a pulley 7 connected to a shaft 8 rotatably supported in bearings 9 and 10. To the shaft 1 8 5 are connected or Asecured any suitable number of hubs 11 provided with radial arms 12 and 13 to the outer ends of which are secured impelling members 14 and 15, these members being preferably' formed together as units 90 or integrally as clearl shown in Fig. 1 of the drawings. It wil be noted that there is provided an axial passage about the lshaft 1 and between the arms 12 and 13 from one end to the other end of the device as clearly shown in Fig. 1 of the drawings. VBetween the impelling members 14 and 15 are provided a number of radially extending passags through which the material may be centri gally projected when the rotor 1s rotated. A 100 Surrounding the rotor are provided a number of chambers 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27 and 28 arranged in a. series longitudinally or axially of the rotor and also with a certain number of these chambers, as

for example chambers 16 to 23 inclusive, being arranged with progressively increasing diameters from the inletend of the device, the remaining chambers, as for example chambers 23 to 28 inclusive, being substantially of equal diameter. At the inlet end of the device is provided an inlet passage or conduit 29 having an inlet opening 30 leading into the inlet end of the central passage of the rotor. At the other end of the device is provided a chamber 31 in which the impelling members 14 operate or -rotate to draw air or the like from thefoutlet end of the rotor passage and to project the same through a discharge passage 32, this passage leading, if desired, to the grinding or pulverizing device for supplying air or the like into the same for aiding-in air separating the fine particles being projected by the rotor of the grinding device, or the same may be lead into the atmosphere. It will be observed that the impelling members 14 are of greater diameter than the impelling members 15 of the rotor so that a suction may be created by the impelling members 14 as well as a rapid exit of the air or the like into the discharge 32.

The pulverized material will be carried by a stream of air or the like in more or less suspended form from the pulverizing device, through the passage 29 into the opening 30 and into the central passage of the rotor where centrifugal action will carry the particles to the chambers 16 to 28 inclusive. The heavier particles will be acted upon first and projected into the chambers 16, 17 and 18 and the less coarse particles will be projected into chambers 19, 20, 21, and 22 and the iinest particles will be projected in the remaining chambers 23 to l28 inclusive. The coarser particles may be led back into the inding device to be acted upon again with t e material being reduced therein.

Each chamber has a substantially tangential discharge passage 33 leading intQ a pocket 34 provided at the bottom thereof with a valve 35 having therein a rotating butterfly valve 36 fastened to the shaft 8. To each -valve structure 35 may be connected a discharge conduit or duct 37 leading .to any desired point for the conveying oi of the segregated material collected in the pocket 34 and fed by the valve 36 into the duct 37. Between the chambers and the collecting pocket may be interposed a wall or baie plate38 extending part way across the space between the chamber and the pocket and to one side of the passage 33, as clearly shown in Fig. 2 of the drawings..

In the form of device shown, all of the butterfly valves 36 are secured to the common shaft 8 and the latter rotated so that the butteriy valves will operate in unison and feed thc material collected in the pockets 34 into the respective ducts 37 thereof. l

Practically all the particles will be `cast into these chambers in substantially successive grades of neness and the air or the like proceeding or drawn from the outlet end of vthe rotor will be practically free of any articles and discharged by the blower 14 into 'i limited tothe particular construction, details and arrangement of parts disclosed, but that otherconstructions, details and arrangements of parts are comprehended by the in vention without departing from the spirit thereof.

Having thus described my invention,

1. A segregator for ground material, comprising a rotor for centrifugally projecting the material, a series of chambersarranged along the length of and surrounding the rotor for receiving the projected material in suc- -cessive grades of lineness, said rotor havin an axial passage, means'at the "inlet of sai passage for entry of the material in suspended state with air or the like, said rotor having means at the outlet of said pas-sage for withdrawing the air vvor the like substantially free of suspended material. n

2. A segregator for ground material, comprising a rotor for'centrifugally projecting the material, a series of chambers surrounding the rotor'for receiving the projected material in. successive grades of fineness, said rotor having an axial passage, means at the inlet of saidflpassage for entry of the material in suspended state with air-or the like, said rotor having means at the outlet of said passage for withdrawing the air or the like substantially free of suspended material, a number of. said chambers increasing in diameter from the inlet end of said passage and the remainder of said chambers being of substantially equal diameters.

3. In a segregator for ground material, a housing, a rotary impeller longitudinally disposed in the housing, the housing having an inlet for the material laderr air at one end of the impeller and having a, series of collecting` pockets arranged along the length of and sur- Y roundingthe impeller and having an outlet lll 4.y A segregator for ground material, comprislng a houslng, a `rotor 1n sald housing, means for causing an uninterrupted stream of material laden air to iow through saidhousing and along said rotor, and a series of chambers in said housing and surrounding said rotor to receive material projected from said stream by said rotor in successive grades of fineness.

5. `A segregator for ground material, comprising a housing, a rotor in said housing, means for causing an uninterrupted stream of material laden air to 'low through said housing and along said rotor, a series of chambers in said housing and surrounding said rotor to receive material projected from said stream by said rotor in successive grades of flneness, and a discharge conduit for eachof said chambers.

6. A segregator for ground material, comprising a housing, a rotor in said housing,

, means for causing an uninterrupted stream of material laden air to flow through said housing and along said rotor, a series of chambers in said housing and surrounding said rotor to receive material projected from said stream by said rotor in successive grades of iineness, each chamber having a collecting pocket, and a discharge conduit for each of said pockets.

7. A segregator for ground material, comprising a housing, a rotor in said housing, means for causing an uninterruptedstream of material laden air to flow through said housing and along said rotor, a series of chambers in said housing and surrounding said rotor to receive material projected from said stream by said rotor in successive grades of ineness, a control valve for each chamber, and a common shaft for the valves.

8. A segregator for ground material, comprising a housing, a rotor in said housing, means for forcing a stream of material laden air through said housing and along said rotor, and a series of chambers arranged along the rotor for receiving material projected from said stream'by said rotor in successive grades of iineness, said lchambers varying in crosssectional area from one end of the series to the other end thereof.

9. A segregator for reduced material, comprising a series of chambers having communicating o enings for providing a free passageway't rough said seriesY of chambers, means for m'oving a stream of material laden air along said passageway, and means for rotating said stream in said passageway while' said stream is moving along said passageway for causing particles of material 1n said stream to leave said stream from dlerent passageway through said series of chambers, means for moving a stream of material laden air along said passageway, means for rotating said stream in said passageway while said stream is moving along said passageway for causing particles of material in said stream to leave said stream from different parts thereof and to be received in said chambers,

impeller housing for supplying material l'aden air to the impeller, the housing having an outlet at the oppositev end of the impeller and related thereto so that the impeller also serves as an exhaust fan for drawing the air through the housing.

12. A segregator for ground material, comprising a rotor for centrifugally projecting the material, means for drawing air laden with the material longitudinally into the rotor, and a plurality of of chambers arranged in a series along the lengthof and around the rotor for receiving the projected material in successive grades of iineness, each of said chambers having substantially tangential discharge outlet for the material projected thereinto.

13. A segregator for ground material, comprising a rotor, means for drawing material laden air' longitudinally through the rotor, and a series of chambers arranged along the length of and surrounding the rotor for receiving the projected material in successive grades of ineness, each chamber having a depending pocket, and a wall extendingwpart way across the passage from the cham r to the pocket.

In witness whereof, I hereunto subscribe my name to this specification.

HENRY G. LYKKEN.

parts thereof and to be4 received in said comprising a series of chambers having com- 1 munlcatng openings for providing afree 

